Cast truck-bolster.



PATENTED JULY s, 1906.

A STUUKI CAST TRUCK BOLSTER.

APPLIOATIOIN FILED OUT. 25, 1905.

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INVENTOR. M afltzavl immum Ill WITNESSES.

\ UNITED STATES ARNOLD STUCKI, OF ALLEGHENY, PENNSYLVANIA.

CAST. TRUCK-BOLSTER.

Specification of Letters Patent.

Patented July 3, 1906.

Application filed October 25, 1905. Serial No. 284,394.'

To all whom it may concern.-

Be it known that I, ARNOLD STUoKI, a resident of Allegheny, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Im rovement in Cast Truck- Bolsters; and I do liereby declare the following to be a full, clear, and exact description thereof.

This invention relates to cast bolsters for railway-trucks and the like.

The object is to provide a cast-bolster which is strong vertically and horizontally, which is of the minimum weight, which has strong box end sections, with stiffener for the column-guides, and especially one which can be manufactured with ease and facility.

The invention consists of a bolster having the special features hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a plan view of the bolsters Fig. 2 is a side view of the same. Fig. 3 is an end view of the same; and Figs. 4, 5, and 6 are cross-sections taken,-respectively, on the lines 44, 5 5, and 6 6, Fig. 2.

My improved bolster has a body which is substantially T shape in cross-section, having the vertical web 2, bottom flan es 3 and top flanges 4, the former preferably being narrower than the latter. At the middle of the bolster is the usual center-bearing 5, which is stiffened by means of the webs or fillets 6 uniting the flanges 3 and 4 and web 2.

The ends of the bolster are substantially box-shaped, having the top web 8, bottom web 9, and side webs 10. The latter have formed integrally therewith the columnguides 11. continues through the box-shaped end, as shown in Fig. 1, and in said box-shaped end there is also provided a transverse vertical web 12, which extends between the columnuides and serves to keep the bolster square, race the columnuides, and stiffen the spring-seat, so as to be able to take the thrust of the springs from underneath. The box is open at the end of the bolster.

In order to give the bolster great strength The central web 2 of the bolsteragainst horizontal stresses, the edges of the top flanges 4 are thickened by being provided with beads or the like 14, as shown in Fig. 5. These beads are each of less thickness than the thickness of the flanges 4, this being done in order to facilitate the manufacture. These cast bolsters are made from atterns which are divided vertically throug the web 2 of the bolster. The flanges 3 and 4 are slightly tapered, so as to facilitate the removal of the pattern from the mold. The beads 14 are provided for by strips separate from the main portion of the pattern, so that after the main portion of the pattern has been withdrawn these strips can be moved slightly inwardly and then withdrawn. This is made ossible because they are of less thickness t an the flange itself.

The bolster described is of minimum Weight, has great tensile strength both horizontally and vertically, and has a strong box end section, which is stiffened by a transverse web in the line of thrusts of the column-guides and spring-seat. The horizontal strength of the bolster is very largely increased by the thickened edges of the top flanges. Inasmuch as the added metal is of less thickness than the flange itself, they can be formed by a stri separate from the pattern, thus greatly facilitating the manufacture and making it possible to mold the bolster without the use of large, troublesome, and expensive cores.

What I claim is- 1. A cast bolster having a web and flanges, said flanges having their edge portions reinforced or thickened by beads not thicker than the flanges themselves.

2. A cast bolster having a vertical web and top and bottom flanges, said top flanges having their edge portions reinforced or thickened b beads not thicker than the flanges themse ves.

In testimony whereof I, the said ARNOLD STUCKI, have hereunto set my hand.

ARNOLD STUOKI. Witnesses RoBEm C. TOTTEN, J. R. KELLER. 

